Skiving-machine



No. 42,836. PATENTED MAY 24, 1864.

J. w. & 0. F. CHASE. A

SKIVING MACHINE.

Inven fprp 6 @mi m: mums PEYERS co. vumo cvmuiwunmr-mu, r1.

UNITED STATES PATENT CrrrcE.

JOHN TV. CHASE AND CHARLES F. CHASE, OF NORTH WEARE, NEW

' HAMPSHIRE.

SKlVlNG-MACHlNE.

Specification forming part of Letters Patent No. 42.836, dated May 24,1864.

To all whom it may concern Be-it known that we, J. WV. CHASE and C. F.CHASE, of North VVeare,'in the county of Hillsborough and State of NewHampshire,

I have invented a new and useful Improvement in Skiving-Machiues and wedo hereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon.

Qnr invention or improvement in skiving- I machines consists, first, inthe use of a frietion roller attached to the spring-apron by means of'aninflexible frame, and in the use ofacollared screw as a stop to holddown the apron and roller; amhsecondly, in the ar rangeinent of thegear-shaft upoirthe same posts or standards which support and guide thegage-roller.

. In the. skiving-macnines heretofore in use and constructed somewhatsimilarly to ours, four posts have been employedtwo for supporting thegear-shaft and-two others for supporling'the pinions, thimbles,- andsprings employed or setting the gage-roller. These posts cannot be castwith the bed plate on account of the difliculty ofdrawiiig the mold.Therefore two of the posts were cast separate-ly, and then fastened tothe bed-plate by means of screws.

. In order to avoid expense or metal, and also to save labor, we haveinvented a new are ra-ngement by which the gear-shaft, frictionroller,and devices for setting the latter are all supported upon the same twoposts.

- In the accompanying drawings, Figure 1 is a backview of our machine.Fig. 2 is abottom view of the same. Fig. 3 is a detached view of thecollared screw. Fig. 4 represents the collar.

In the construction of our machine thebedplate A is 'cast without anyposts or standards. The two posts 13 are inserted in the bed-plate. Uponthese posts are placed the coiled springs C and the thimbles D, so as toslide up and down. These are held inplace by the pinions E, which havescrew threads, and are capable of being raised or lowered likescrew-nuts. After these pinions are placed on the posts, the latter arecrowned rangement it will be seen that pinion E can be raised or loweredat pleasure by simply turning one of the cog-wheels H, both pinionsrising and falling at the same time and exactly the same distance.

The rod I is inserted into the thimble D, and therefore rises and fallswiththe thimble, carrying the swinging arms K and gage-roller L, whichis thus adjusted to the proper height above the knife, according to thedesired thickness of the leather.

Onthe under sideof the a ron N. we have arranged a l'rictionrollor, 0.Fig.2, close to the edgeot' the knife. This roller is held'in aninflexible frame, 1 which is riveted to the apron in orderto prevent thelatter from twisting. Thejournalsot' this roller are made separately,(as indicated in dotted lines,) and held in place by screws lt.

The spring-apron M and .roller 0 are adjusted by means of a collaredscrew, R, Figs.

1 and 3, inserted into the bed-plate, the collar overlapping the edge ofthe apron, as seen in Fig. '1.

The detailsof construction of our machine may be somewhat varied withoutdeparting from our invention.

Having thus fully described our invention, what we claiin,and desire tosecure by Letters Patent of the United States, is-

1. The friction roller O,in co1nbination with the inflexible frame P andspring-apron M, substantially as set forth.

2. The use of the above described collared screw for adjusting thespring-apron 3. Supporting the gear-shaft G upon the same posts orstandards,B,which support and guide the gage roller L, substantially inthe manner and for the purposes set forth.-

JOHN W. CHASE. CHARLES F.-CHASE.

\Vitnesses to signature of John W. Chase:

DANIEL BREED, G. BREED.

Witnesses to signature of Oh arles F. Chase:

- DANIEL HANSON,

SI NEY B. CHASE.

